Finding the Fourth Proportional to 12,837.64, 17,714.20 and 7,171.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,837.64 : 17,714.20 = 7,171.69 : x
2. Step 2: Convert to fraction form
   12,837.64/17,714.20 = 7,171.69/x
3. Step 3: Cross multiply
   12,837.64x = 17,714.20 × 7,171.69
4. Step 4: Simplify right side
   12,837.64x = 127,040,751.00
5. Step 5: Solve for x
   x = 127,040,751.00/12,837.64
6. Step 6: Final answer
   x = 9,895.96